| 两级UASB-SBR处理高氨氮垃圾渗滤液的快速启动及稳定运行 |
| 摘要点击 3458 全文点击 2713 投稿时间：2008-07-05 修订日期：2008-09-01 |
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| 中文关键词 垃圾渗滤液 高氨氮 深度脱氮 缺氧/厌氧UASB SBR 启动 低溶解氧 |
| 英文关键词 landfill leachate high ammonia nitrogen advanced nitrogen removal：anoxic/anaerobic UAsB SBR start-up low DO |
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| 中文摘要 |
| 在严格控制试验条件的基础上，首次采用缺氧/厌氧UASB-SBR生化系统处理高氨氮垃圾渗滤液结果表明，经过5个阶
段(116 d)的连续运行，获得了稳定的工艺性能在进水COD为1 237.2～12 596.8 mg/L条件下，出水COD稳定在108.4～528.26 mg/L；在进水NH4+-N为155.8～1 298.0mg/L的条件下，出水NH4+-N稳定在0.12～4.1 mg/L，实现了有机物及氨氮的深度去除.SBR采用硝化出水回流的运行方式，对原水既有一定的稀释作用，又可使富含NOx-N的硝化液借助原水中丰富的有机碳
源在缺氧UASB内进行反硝化，实现生物脱氮及降解有机物的双重目的缺氧UASB1、厌氧UASB2和SBR反应器的OLRmax(以COD计)分别为13、2.09、2.14 kg/(m3·d)UASB1、UASB2和SBR的OLR与相应的OLRrem 均呈现较好的线性关系.SBR的NLR(以氮计)与NLRrem也呈现较好线性相关此外，3个反应器的OLR与去除率(η)呈二次相关另外，SBR实现了氨氮的真正去除.整个试验过程中，SBR反应器在室温下运行，硝化阶段溶解氧低于1.0 mg/L，进水温度从20.7℃逐渐降低至10.3℃，SBR的硝化率和反硝化率始终维持在98.5％和97.7％以上，实现了深度脱氮 |
| 英文摘要 |
| Under the well-controlled experimental conditions，the biological treatability of real municipal landfill leachate with high strengthnitrogen aad high chemical oxygen demand(COD) concentration using anoxic/anaerobic upflow anaerobic sludge bed(UASBj-sequencingbatch reactor(SBR)combined process was conducted in laboratory. The results indicated：stable anoxic/anaerobic UASB-SBR processpeformance was devdoped during running continuously for five phase(116 d)when feed COD concentration was range from 1 237.2 mg/L to12 596.8 mg/L effluent COD concentration was between 108.4 mg/L mad 528.26 md/L，and when the influent ammonia nitrogen (NH4+-N)was changed from 155.8 mg/L to 1 298.0 mg/L，the effluent NH4+-N was varied from 0.12 mg/L to 4.1 mg/L，it achieved high COD madNH4+-N removal efficiency. In this present study，it is noted that the anoxic UASB1 has two significant effects:firstly，denitrification reactionof high efficiency was conducted for SBR nitritied effluent recireulated by using the abundant organic matters in the raw leachate as carbonsource. Secondly，its relaaoval COD was highly effected by anaerobic biodegradation The effluent COD of anoxic UASB1 was biodegraded further
in the anaerobic UASB2 and aerobic SBR，the maximum organic loading rates(OLR)(as COD)were 13.0，2.09，2.14 kg/(m3·d)，respectively. In addition，the correlation between OLR with OLBrem and COD removal efficiency of three reactors wus studied,relationbetween nitrogen loaing rate(NLR)with NH4+-N removal efficiency of SBR was tested by linear regression analysis,it was found that theOLR of anoxic UASBl，anaerobic UASB2 mad aerobic SBR increased linearly with OLRrem As to SBR，the correlation was significantbetween NLR(as N) with NLRrem In addition，the OLR of three reactors shows second order exponential correlation with COD removalefficiency At last，when the water telnperature of SBR ranged from 20.7℃ to 10.3℃，and dissolred oxygen was controlled below 1.0 mg/L，the effciencies of nitrification and denitrification were above 98.5% and 97.7% during the whole experimental running period，it achievedadvanced nitrogen removal. |
